Stainless Steel Wafer Type Check Valves

The butt-clamp check valve is suitable for water, steam, oil, gas and weak corrosive media, widely used in petroleum, chemical, electric power, HVAC and other systems. The valve has a compact structure and is suitable for horizontal or vertical installation, especially for pipelines with restricted space. The working temperature range is generally -29℃ to +425℃, depending on the selected material. The main function is to prevent backflow of media, relying on the fluid's own pressure to open and close automatically, without external drive. Commonly used materials include carbon steel, stainless steel, alloy steel, sealing surface can be selected rubber, PTFE or hard alloy, to adapt to a variety of complex working conditions.

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products

Stainless Steel Wafer Type Check Valves

Model: H71W, H77X

Subtitle：Corrosion-resistant pinch check valve

The Stainless Steel Wafer Check Valve is a corrosion-resistant, non-return valve designed to prevent reverse flow in demanding environments such as chemical processing, marine applications and high purity systems. The valve features a butt-mounted design, which is fitted between flanges to provide a compact, lightweight solution with minimal pressure drop.

Tags:Stainless Steel Check Valve, Corrosion-resistant valves

Classification:Clamping check valves

Working conditions:drugs manufacturing factory, chemical plant, waterwork, water treatment plant

Product Overview	The Stainless Steel Wafer Check Valve is a corrosion-resistant, non-return valve designed to prevent reverse flow in demanding environments such as chemical processing, marine applications and high purity systems. The valve features a butt-mounted design, which is fitted between flanges to provide a compact, lightweight solution with minimal pressure drop. Constructed entirely of stainless steel (ASTM A351 CF8M/CF3M), this valve excels in handling aggressive media, high temperatures and high pressure conditions. Its swing disc or dual disc design ensures a quick seal in the event of a flow reversal, making it ideal for applications requiring reliability and durability.

Main characteristics	Complete stainless steel construction: body, discs and fasteners made of CF8M (316 stainless steel) or CF3M (316L stainless steel). Resistant to aggressive agents, crevice corrosion and oxidation (e.g., chlorides, acids,...) Counter-clamp design: compact and lightweight, ideal for space-constrained installations. Mounts between ANSI/DIN/JIS flanges with no other bolts or gaskets. Low resistance and fast closing: optimized flow path minimizes pressure drop. Swing-open flaps or spring-assisted double discs ensure immediate sealing to prevent water hammer. High Temperature Capability: Reliable operation at temperatures up to 400°F (204°C) with optional materials for higher temperatures. Compliance: Meets API 594, ASME B16.34, ISO 17292 and NACE MR0175.

Product Advantages	Corrosion resistance: Suitable for harsh environments, including marine and chemical exposures. Hygienic design: Electropolished surfaces (RA ≤ 0.8 μm) comply with FDA and EHEDG standards for hygienic applications. LOW MAINTENANCE: Self-cleaning design reduces fouling and extends service life. Versatility: Suitable for high purity and industrial corrosive media.

Why Choose Us	Material Integrity: Complete stainless steel construction ensures longevity in aggressive environments. Fast delivery: standard DN50-DN300 sizes with global logistics support. Customization: optional coatings (PTFE, DLC), high speed springs or specialized seals. Certification: 3.1 Material Certificates, NACE Acid Services Compliance.

Medium of use

Water/hot water, oils, waters, Alkalis (sodium hydroxide, ammonia, etc.), Acids (sulfuric, hydrochloric, nitric, etc.)

working condition

drugs manufacturing factory, chemical plant, waterwork, water treatment plant, petrochemical industry, corrosive medium, Corrosive media, Corrosive conditions, paper mills, food factory

summarize

The Stainless Steel Counter Clamp Back Valve is a premium solution for preventing reverse flow in corrosive, high purity or high temperature systems. Its stainless steel construction, compact butt-clamp design and adherence to international standards make it ideal for industries such as chemical processing, marine and food and beverage. Whether it's maintaining critical processes or ensuring system efficiency, this valve offers unrivaled reliability and corrosion resistance.

Product Parameters

Nominal diameter	2" to 24" (DN50 to DN600)
Nominal pressure	Class 150 to Class 900 (ASME B16.34)
temperature range	-29°C to 204°C (-20°F to 400°F)
Valve Material	Stainless Steel (304/316/CF8M/CF3M)
Valve material	Stainless Steel (316/316L)
Seat Material	EPDM, FKM or PTFE (chemical resistance)
connection method	Clamping type (suitable for ANSI 150/300/600, DIN or JIS flanges)